Thanks to my awesome colleague Nico, I was able to strikethrough 4 BUTs that were fixed!
B1.1 Portfolios supports 1500 projects BUT Workload gets disabled about 250** → this is now 1500 projects in Workload
B5.4 Subtasks seem to be part of a project BUT project does not show up in My Tasks → they now do!
B5.5 List view supports subtasks BUT subtask drop-downs disappear when list is sorted or filtered. → it appears 
B7.4 Audit logs are added to tasks BUT a user can remove some of them. → users can’t remove audit logs anymore